Valve unit



FIG. 1 is a bottom, front, right side perspective view of a valve unitshowing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The broken lines depict portions of the valve unit which form no part ofthe claimed design.

CLAIM The ornamental design for a valve unit, as shown and described.